Device for cooling water



June 10, 1930. COFFEY 1,762,762

DEVICE FOR COOLING WATER Filed Dec. 1925 ATT EY' Patented June 10, 1930 UNITED STATES PATENT OFF-ICE BARTON H. coEEEY, or ELIZABETH, NEW JERSEY, ASSIGNOR 'ro THE COOLING TOWER co. mc. ,oE NEW YORK, N- Y., a CORPORATION or NEW YORK DEvIcE FOR COOLING ATER Application filed December 5, 1925. Serial No. 73,458.

My invention has relation to new and useful improvements in devices for cooling water and the like and the primary object of my invention is to provide an effective and economical device for cooling water and the like;

another object of my invention is to provide a device of the character described of a minimum weight; another object of my invention is to minimize the energy necessary to maintain the air current in. the device.

I accomplish this object by the device illus-.

trated in the accompanying drawings.

The inventionconsists in the improvements fully described hereinafter and the novelty of which will be particularly pointed out and distinctly claimed.

I have fully and clearly illustrated my invention in the accompanying drawings to be taken as a part of this specification and wherein:

Figure 1 is a sectional elevation of the device with a schematic diagram of the cooling system,

Figure 2 is a cross section on the line 22 in Figure 1, and

Figure 3 is a detail of the eliminator screen, on the line 3-3 in Figure 1.

Similar characters refer to similar parts throughout the several views.

Before proceeding with the detail description of my invention, I would state that it is shown as applied to a system in which there is a continuous circulation of the water through the plant or surface condenser where it becomes heated and is then returned to the cooling device from which, after the desired reduction of temperature, it is again delivered to the plant.

Referring to the drawings by characters of reference, 1 is a frame work'of'any suit-able character by which is supported the cooling draft tube in the form of an inverted truncated pyramidal tube 2 having flaring sides positioned at'an angle of approximately SIX degrees to the vertical as will behereinafter more particularly explained, wh ch forms a Venturi expanding tube, and which s preferably provided with a mouth 3 having vertical sides. In the mouth 3 I provlde an air nozzle 4 slightly smaller in cross section than REISSUED 4 and within the mouth 3. A duct 6 leads from a blower 7 to the air nozzle 4. At a suitable location such as the lower part of the frame 1 is provided means for collecting the water which may be a tank 8 or the like but this tank 8 may be entirely omitted as conditions may require.

The cooled water is led by means of a duct 9 to a circulating pump 10 from which it is carried by a duct 11 or the like to the plant or source of heat such as a surface condenser 12 or the like where the water becomes heated and is then carried by a suitable duct 13 to a spray nozzle 14 which is preferably centrally locate-d in the upper part of the tube 2. Above the tube 2 I provide a stack 15 of such height as conditions may require and above the stack 15 I preferably provide a cap 16 having a roof or cover 17 and open sides in which I preferably set vertical, angularly disposed slats or eliminators 18,- 18 so arranged that the air passing out of the tower will strike against the said slats 18.

The device being thus assembled, the water will be driven by the pump 10 through the condenser 12 and ducts 11 and 13 to the spray nozzle 14; which is of any desired type adapted to break up the water into spray.

The water from the nozzle 14 will be met by the air delivered by the blower 7 through the duct 6 to the air nozzle 4.

I preferably admit this air at a velocity of approximately 2000 feet per minute at which velocity no falling water is permitted to enter the open air nozzle 4. The sides of the tube 2 preferably diverge at an angle of approximately six degrees whereby I effect a maximum economy of power (and attain a high efliciency of the circulating air which is well understood in the Venturi tube art. The

tube 2 serves as a diverging and diffusing disthe'sides thereof being cooled by this rocess and is collected and carried off at the bottom by means of the tank 8 or in any desired manner. The air in its upward passage through the draft tube'2 and the stack will gradually lose its high velocit and its capacity for carrying the water from the nozzle 14 and such water as may still be carried by the air as it passes out of the top 16 of the device through the slats or eliminators 18 will 10 ,be collected from the air by the'said slats or eliminators- 18 and will run down the inner face of the stack 15 and draft tube 2 to the collecting tank 8 so that the air which passes out through the eliminators 18 will carry no spray. I prefer to construct my said device of square or rectangular form whereby each will form a unit adapted to be set up in batteries of two or more units.

Having thus described my invention, what I claim is:

1. In a device of'the character described, the combination of a Venturi expanding tube provided with a mouth having vertical sides, 25 an air nozzle in the said mouth, an annular passage exterior of the nozzle and within the mouth, means for delivering a spray of water within the upper part of said Venturi tube, means for discharging air from the air nozzle at a velocity sufficient to prevent the water from entering the air nozzle whereby the water is caused to run down the sides of the tube between the mouth of the tube arid "the air duct, means for collecting the water and means to convey water from said collect- 10o ing means to said delivering means.

2. In a device of the character described the combination of a Venturi expanding tube having a mouth at its lower end, an 0 air duct therein and adapted to deliver air m5 at high velocity within the mouth of the tube, means for delivering a spray of water to be cooled within the uoper part of the tube, a stack above the tube provided with eliminators adapted to collect water from the air no passing out of the stack, means for collecting said water, and means for redelivering said water to said first named means.

In testimony whereof I atfix my signature.

5o BARTON H. COFFEY. 

